diff --git a/flask/_compat.py b/flask/_compat.py
index a3b5b9c1..25d2e8e6 100644
--- a/flask/_compat.py
+++ b/flask/_compat.py
@@ -83,6 +83,7 @@ if hasattr(sys, 'pypy_version_info'):
     class _Mgr(object):
         def __enter__(self):
             return self
+        
         def __exit__(self, *args):
             if hasattr(sys, 'exc_clear'):
                 # Python 3 (PyPy3) doesn't have exc_clear